Two-photon resonance enhanced MPI-PES above the lowest ionization threshold: Observation of the [a<sup>1</sup>Δ]5pπ<sup>2</sup>φ state of the SH (SD) radical

Two-photon resonance enhanced MPI-PES above the lowest ionization threshold: Observation of the [a¹Δ]5pπ²φ state of the SH (SD) radical

Authors	J.B. Milan W.J. Buma C.A. de Lange C.M. Western M.N.R. Ashfold
Publication date	1995
Journal	Chemical Physics Letters
Volume \| Issue number	239 \| 4-6
Pages (from-to)	326-331
Organisations	Faculty of Science (FNWI) - Van 't Hoff Institute for Molecular Sciences (HIMS)
Abstract	A (2 + 1) resonance enhanced multiphoton ionization photoelectron spectroscopy (REMPI-PES) study of the hitherto unobserved [a 1D]5p 2 Rydberg state of the SH (SD) radical is reported. Despite the fact that this state has an excitation energy which exceeds the lowest ionization energy, ionization is observed to occur preferentially by the absorption of a third photon after the two-photon excitation step, rather than through autoionization. Photoelectron spectra show a large asymmetry in the rotational branching ratios, which is attributed to the high value of + in the ionic state.
Document type	Article
Language	English
Published at	https://doi.org/10.1016/0009-2614(95)00488-P
Downloads	ChPhL_1995_239_326.pdf (Final published version)
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